#ifndef __LIB_KERNEL_LIST_H
#define __LIB_KERNEL_LIST_H
#include "global.h"

#define offset(struct_type,member) (int)(&((struct_type*)0)->member)
#define elem2entry(struct_type, struct_member_name, elem_ptr) \
	(struct_type*) ((int)elem_ptr - offset(struct_type, struct_member_name))


struct list_elem {
	struct list_elem* prev;
	struct list_elem* next;
};

struct list {
	struct list_elem head;
	struct list_elem tail;
};

/*function refence struct list_elem, so need declare after list_elem*/
typedef bool (function)(struct list_elem*, int arg);

void list_init(struct list* list);
void list_insert_before(struct list_elem* before, struct list_elem* elem);
void list_push(struct list* plist, struct list_elem* elem);
void list_iterate(struct list* plist);
void list_append(struct list* plist, struct list_elem* elem);
void list_remove(struct list_elem* pelem);
struct list_elem* list_pop(struct list* plist);
bool list_empty(struct list* plist);
uint32_t list_len(struct list * plist);
struct list_elem* list_traversal(struct list* plist, function func, int arg);
bool elem_find(struct list* plist, struct list_elem* obj_elem);

#endif

